Sanyo DSR-M814 Service Manual

Also see for DSR-M814: Instruction manual Service manual addendum

Contents

− 4 −WARNINGDo not use solder containing lead.This product has been manufactured using lead-freesolder in order to help preserve the environment.Because of this, be sure to use lead-free solder whencarrying out repair work, and never use soldercontaining lead.Lead-free solder has a melting point that is 30 - 40°C (86 -104°F) higher than solder containing lead, and moreover itdoes not contain lead which attaches easily to other metals.As a result, it does not melt as easily as solder containinglead, and soldering will be more difficult even if thetemperature of the soldering iron is increased.The extra difficulty in soldering means that soldering timewill increase and damage to the components or the circuitboard may easily occur.Because of this, you should use a soldering iron andsolder that satisfy the following conditions when carrying outrepair work.Soldering ironUse a soldering iron which is 70 W or equivalent, andwhich lets you adjust the tip temperature up to 450°C(842°F). It should also have as good temperature recoverycharacteristics as possible.Set the temperature to 350°C (662°F) or less for chipcomponents, to 380°C (716°F) for lead wires and similar,and to 420°C (788°F) when installing and removing shieldplates.The tip of the soldering iron should have a C-cut shape ora driver shape so that it can contact the circuit board as flator in a line as much as possible.SolderUse solder with the metal content and composition ratio byweight given in the table below. Do not use solders which donot meet these conditions.Lead-free solder is available for purchase as a service tool.Use the following part number when ordering:Part name: Lead-free solder with resin (0.5 mm dia., 500 g)Part number: VJ8-0270Note:If replacing existing solder containing lead with lead-freesolder in the soldered parts of products that have beenmanufactured up until now, remove all of the existing solderat those parts before applying the lead-free solder.The first and second digits of the serial numberindicate the year and month of production.For example, "95" indicates production was inNovember 2005, and "96" indicates that productionwas in December 2005.However, these numbers start at "01" and are resetafter "96" is reached, so that January 2006 is indi-cated by a number that starts with "01".Because of this, serial numbers for products manu-factured from January 2006 onward may be smallerin value than serial numbers for products manufac-tured in December 2005.Example :Production in Dec 2005: "96120001"Production in Jan 2006: "01120001"Production in Feb 2006: "02120001"Products listed in the Service Manuals with serialnumbers of "96XXXXXX or later" include serialnumbers such as "96XXXXXX", "01XXXXXX" and"02XXXXXX".In addition, products listed with serial numbers of"01XXXXXX or earlier" include serial numbers suchas "01XXXXXX", "96XXXXXX" and "95XXXXXX".RELATIONSHIP BETWEEN NUMBER AND PRODUCTION PERIODMetal content Tin (Sn) Silver (Ag) Copper (Cu)Compositionratio by weight 96.5% 3.0% 0.5%